Erythranthe linearifolia |
Erythranthe trinitiensis |
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primrose monkeyflower, threadleaf primrose monkeyflower |
pink-margined monkeyflower, Trinity Mountains or pink-margined monkeyflower |
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Habit | Perennials, rhizomatous, densely cespitose, forming large patches and turfs 0.3–1 m diam. | Annuals, shallowly fibrous-rooted. |
Stems | erect to ascending, simple, 2–10 cm, sparsely hirsute and stipitate-glandular, internodes shortened. |
erect, straight at nodes, simple or branched at base, 5–15 cm, puberulent, hairs gland-tipped, glands often dark. |
Leaves | basal or near basal, sometimes proximal cauline, subrosulate; petiole 0 mm; blade 1-veined or palmately 3-veined, linear to narrowly oblanceolate, 15–50 × 1.5–5 mm, base long-cuneate, often subclasping, margins entire, dentate-serrate, or distally dentate, apex acute, surfaces glabrous or adaxial sparsely short-pilose, eglandular. |
mostly cauline, largest at mid stem; petiole 4–8 mm, 1-veined, not winged; blade palmately 3-veined, ovate to elliptic-ovate, 6–17 × 4–9 mm, base attenuate, margins entire or dentate-serrate, teeth 1–2 per side, shallow, apex acute, surfaces puberulent, hairs gland-tipped, glands often dark, adaxial sometimes sparsely villous-glandular. |
Flowers | herkogamous, 1. |
herkogamous, 1–12, from proximal to distal nodes. |
Styles | glabrous. |
glabrous. |
Corollas | yellow, red-spotted or -striped, bilaterally symmetric, weakly bilabiate, loosely hirsute on abaxial side of opening; tube-throat narrowly campanulate, 18–22 mm, exserted beyond calyx margin; lobes broadly obovate-oblong, apex rounded- or truncate-notched, throat open. |
yellow and light pink to white, tube-throat yellow (inner and outer surfaces), lobes (limb) pink or white with pink distal borders, palate ridges yellow, throat floor and ridges weakly red-spotted, bilaterally symmetric, weakly bilabiate; tube-throat funnelform, 7–10 mm, exserted beyond calyx margin. |
Fruiting pedicels | (40–)65–85(–120) mm, glabrous or sparsely stipitate-glandular near base. |
divergent-arcuate, 9–17 mm. |
Fruiting calyces | winged- or plicate-angled, tubular-campanulate, weakly or not inflated, 9–10(–12) mm, glabrous. |
oblong-ovoid, distinctly inflated, 8–10 mm, margins distinctly toothed or lobed, puberulent, hairs gland-tipped, glands often dark, lobes pronounced, erect. |
Capsules | included, 6–7 mm. |
included, 6–8 mm. |
Anthers | included or slightly exserted, margins ciliate, glabrous. |
included, glabrous. |
Erythranthe linearifolia |
Erythranthe trinitiensis |
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Phenology | Flowering Jul–Sep. | Flowering Jun–Jul(–Aug). |
Habitat | Wet banks, Darlingtonia seeps and bogs, seepages in serpentine talus. | Seeps over serpentine, wet meadows, roadsides. |
Elevation | 600–2800 m. (2000–9200 ft.) | 1300–2000 m. (4300–6600 ft.) |
Distribution |
CA
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CA |
Discussion | Erythranthe linearifolia is endemic to serpentine substrates in Shasta, Siskiyou, and Trinity counties; typical E. primuloides occurs in the same area but not on serpentine. Erythranthe linearifolia is distinct from E. primuloides especially in its narrow leaves and cespitose habit. A collection from Tulare County appears to be E. linearifolia (Shevock 10597, CAS), but this appears to be far out of range and the voucher should be reexamined; it probably is better identified as an unusual collection of E. primuloides. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Erythranthe trinitiensis is similar to E. pulsiferae in its narrow leaves, glandular-puberulent vestiture, and weakly bilabiate corollas; it differs in its early-shed basal leaves, cauline leaves with one-veined petioles, and yellow corolla tubes and throats with pink lobes or lobe margins. The species is known only in Humboldt, Siskiyou, and Trinity counties. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 17, p. 390. | FNA vol. 17, p. 399. |
Parent taxa | Phrymaceae > Erythranthe | Phrymaceae > Erythranthe |
Sibling taxa | ||
Synonyms | Mimulus primuloides var. linearifolius, M. linearifolius, M. primuloides subsp. linearifolius | |
Name authority | (A. L. Grant) G. L. Nesom & N. S. Fraga: Phytoneuron 2012-39: 35. (2012) | G. L. Nesom: Phytoneuron 2013-43: 1, figs. 1–3. (2013) |
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